Motor Coach Mc5b 1976

Model Mc5b made in 1976 by Motor Coach got 2 recalls. There was one recall concerning service brakes, air .

Model 1976

Recalls


CampaignManufacturerManufacturing dateType# of units affectedDate Owner notified MfgRecall Initiated byManufacturers of recalled vehicles/productsReport Recieved DateRecord Creation DateRegulation Part NumberFMVSS Number
SERVICE BRAKES, AIR
79V178000MOTOR COACH IND., INC.from 02/01/1975 to 09/01/1977V (Vehicle)160210/01/1979OVSCMOTOR COACH INDUSTRIES, INC08/01/197910/12/1979571121
Defect SummaryCertain vehicles do not comply to federal motor vehicle safety standard no. 121, air brake systems. the low air warning signal may not activate until service reservoir pressure is below 60 psi. also, the brake release time may exceed the required 0.55 seconds on the right hand front wheel.
Consequence Summary
Corrective SummaryDealer will adjust the pin switch to pressure to bring vehicles into compliance with federal motor vehicle safety standard no. 121.
NotesVehicle description: buses, intercity.system: service brakes; low air warning signal.consequences of defect: air pressure may fall too low and vehicle operatorwould not be warned. resulting partial loss of braking capability could cause avehicle accident.
SERVICE BRAKES, AIR - SUPPLY
77V186000MOTOR COACH IND., INC. V (Vehicle)118210/05/1977MFRMOTOR COACH INDUSTRIES, INC10/25/197710/12/1979571121
Defect SummaryThe involved vehicles do not conform to federal motor vehicle safety standard no. 121, air brake systems. the two o rings that are supplied along with the new shuttle valves are of a buna v quality. these rings are fully functional in normal climate conditions, however, in extremely cold environments, slight leaks may develop. this valve acts as a seal between the cylinder heads of the shuttle valve and the piston. in time this seal may expand or pucker up, making it possible for the shuttle to become trapped in an emergency braking situation.
Consequence Summary
Corrective SummaryThe dealer will replace all defective o rings with ones having extreme cold resistance properties.
NotesVehicle description: motor homes equipped with new shuttle valves.system: service brakes; air control valve.consequences of defect: in this event, the brakes once on will not releaseand loss of vehicle control and an accident could result.note: driver should be alerted to this condition by a flashing light, buzzer,and a low reading on the air gauge.